IRRADIATION DEVICE

To provide an irradiation device which produces less irradiation unevenness while having excellent heat radiation capacity.SOLUTION: An irradiation device 1A comprises: a substrate 3 having multiple LED elements 2 arranged on its one face 3a; a heat sink 4 provided to the side of the other face 3b; a cooling fan 5 provided at a position sandwiching the heat sink 4 between itself and the substrate 3; and a housing 6 having an irradiation opening 61 and a translucent cover 67. The inside of the housing 6 has a heat radiation space 72 and an irradiation space 71 separated by the heat sink 4, and the housing 6 is provided with an air suction port 62 for sucking in outside air to the heat radiation space 72, an air discharge port 64 for discharging air from the heat radiation space 72, and a sub air discharge port 65 for discharging air from the irradiation space 71. With the multiple LED elements 2 being arranged continuously, the irradiation device is configured in such a manner that the air in the irradiation space 71 flows along the face 3a on which the LED elements are arranged and then is discharged from the sub air discharge port 65.SELECTED DRAWING: Figure 3 【課題】放熱能力に優れながら、照射ムラが小さい照射装置を提供すること。【解決手段】本発明の照射装置１Ａは、一方の面３ａに複数のＬＥＤ素子２が配列された基板３と、他方の面３ｂの側に設けられたヒートシンク４と、基板３からみてヒートシンク４を挟んだ位置に設けられた冷却用ファン５と、照射開口６１と、透光性カバー６７と、を有する筐体６と、を備え、筐体６の内部に、ヒートシンク４によって区切られた放熱空間７２と照射空間７１と、を有し、筐体６には、外部の空気を放熱空間７２に吸い込む空気吸込口６２と、放熱空間７２の空気を排出する空気排出口６４と、照射空間７１の空気を排出する副空気排出口６５が設けられ、複数のＬＥＤ素子２が連続的に配列され、照射空間７１内の空気は、ＬＥＤ素子配列面３ａに沿って流れて副空気排出口６５から排出されるように構成されている。【選択図】図３